A080221 - cp's OEIS frontend

A080221 n is Harshad (divisible by the sum of its digits) in a(n) bases from 1 to n.

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	2
8	7
9	5
10	7
11	2
12	11
13	2
14	5
15	8
16	11
17	2
18	13
19	2
20	13
21	10
22	5
23	2
24	19
25	7
26	6
27	10
28	14
29	2
30	18
31	2
32	16
33	9
34	6
35	11
36	23
37	2
38	5
39	8
40	23
41	2
42	20
43	2
44	11
45	19
46	5
47	2
48	30
49	7
50	16
51	9
52	14
53	2
54	21
55	10
56	21
57	9
58	5
59	2
60	34
61	2
62	5
63	19
64	23
65	13
66	23
67	2
68	12
69	9
70	22
71	2
72	39
73	2
74	5
75	20
76	13
77	13
78	21
79	2
80	34
81	18
82	7
83	2
84	37
85	12
86	5

[1, 2, 2, 4, 2, 6, 2, 7, 5, 7, 2, 11, 2, 5, 8, 11, 2, 13, 2, 13, 10, 5, 2, 19, 7, 6, 10, 14, 2, 18, 2, 16, 9, 6, 11, 23, 2, 5, 8, 23, 2, 20, 2, 11, 19, 5, 2, 30, 7, 16, 9, 14, 2, 21, 10, 21, 9, 5, 2, 34, 2, 5, 19, 23, 13, 23, 2, 12, 9, 22, 2, 39, 2, 5, 20, 13, 13, 21, 2, 34, 18, 7, 2, 37, 12, 5]

cp's OEIS Frontend

A080221 n is Harshad (divisible by the sum of its digits) in a(n) bases from 1 to n.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	2
8	7
9	5
10	7
11	2
12	11
13	2
14	5
15	8
16	11
17	2
18	13
19	2
20	13
21	10
22	5
23	2
24	19
25	7
26	6
27	10
28	14
29	2
30	18
31	2
32	16
33	9
34	6
35	11
36	23
37	2
38	5
39	8
40	23
41	2
42	20
43	2
44	11
45	19
46	5
47	2
48	30
49	7
50	16
51	9
52	14
53	2
54	21
55	10
56	21
57	9
58	5
59	2
60	34
61	2
62	5
63	19
64	23
65	13
66	23
67	2
68	12
69	9
70	22
71	2
72	39
73	2
74	5
75	20
76	13
77	13
78	21
79	2
80	34
81	18
82	7
83	2
84	37
85	12
86	5

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	2
8	7
9	5
10	7
11	2
12	11
13	2
14	5
15	8
16	11
17	2
18	13
19	2
20	13
21	10
22	5
23	2
24	19
25	7
26	6
27	10
28	14
29	2
30	18
31	2
32	16
33	9
34	6
35	11
36	23
37	2
38	5
39	8
40	23
41	2
42	20
43	2
44	11
45	19
46	5
47	2
48	30
49	7
50	16
51	9
52	14
53	2
54	21
55	10
56	21
57	9
58	5
59	2
60	34
61	2
62	5
63	19
64	23
65	13
66	23
67	2
68	12
69	9
70	22
71	2
72	39
73	2
74	5
75	20
76	13
77	13
78	21
79	2
80	34
81	18
82	7
83	2
84	37
85	12
86	5

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	2
8	7
9	5
10	7
11	2
12	11
13	2
14	5
15	8
16	11
17	2
18	13
19	2
20	13
21	10
22	5
23	2
24	19
25	7
26	6
27	10
28	14
29	2
30	18
31	2
32	16
33	9
34	6
35	11
36	23
37	2
38	5
39	8
40	23
41	2
42	20
43	2
44	11
45	19
46	5
47	2
48	30
49	7
50	16
51	9
52	14
53	2
54	21
55	10
56	21
57	9
58	5
59	2
60	34
61	2
62	5
63	19
64	23
65	13
66	23
67	2
68	12
69	9
70	22
71	2
72	39
73	2
74	5
75	20
76	13
77	13
78	21
79	2
80	34
81	18
82	7
83	2
84	37
85	12
86	5